An apparatus and method for uniform mixing and application of a pesticide in a field

Abstract

This invention relates to a uniform pesticide dispensing device, specifically a device for uniformly mixing pesticides in the field and applying them through irrigation. The device consists of a mixer A, a mixer B, and a two-way valve. The two-way valve is installed at the inlet between mixers A and B, which are arranged side-by-side. A drive motor is located outside mixer A and is connected to mixers A, B, and the two-way valve. This device can alternately store water and uniformly add pesticides, ensuring a thorough mixing of water and pesticide before irrigation. This results in a consistent pesticide-to-water dilution ratio throughout the field, effectively killing insects in the soil or at the plant roots while minimizing pesticide residue. It also allows for continuous water flow into the field, improving irrigation efficiency and solving the problems of pesticides failing to reach plant roots or exhibiting uneven dilution in existing application methods.

Description

Technical Field

[0001] This invention relates to an apparatus for uniformly mixing pesticides, specifically an apparatus for applying a uniformly proportioned pesticide mixture to the field by means of irrigation. Background Technology

[0002] After sowing (or transplanting), some crops fail to sprout, some sprout but then loom or die, and some even suffer root rot. Soil-borne pests (or diseases) are the primary cause. Taking leek production as an example, a type of underground pest called the leek maggot is known as the "cancer" of leeks. Its egg, larva, and pupa stages all occur in the soil, with the larvae feeding on the leek roots. Simultaneously, spores of pathogens such as gray mold and blight, which accumulate in the soil year-round, also severely damage the leek leaves. Whether it's pests or diseases, once the economic threshold for damage is exceeded, it can cause huge losses to leek growth or yield, even leading to complete crop failure. To control leek pests and diseases, the commonly used method is still the use of chemical pesticides. However, improper use not only fails to achieve the desired control effect but also accelerates the development of pesticide resistance or increases the likelihood of repeated outbreaks. In unavoidable circumstances, the only option is to increase the dosage of pesticides or switch to highly toxic pesticides, which further increases the risk of excessive pesticide residues or "poisonous leeks" in chives.

[0003] Currently, there are two main methods for controlling pests and diseases in chives: foliar spraying and irrigation. While foliar spraying can evenly distribute the pesticide, few pesticides are effectively transported downwards to control root or soil-borne pests and diseases. Furthermore, aside from pests and diseases near the chive roots, other soil-borne pests and diseases cannot come into contact with the pesticide. Therefore, using spraying to control soil-borne pests and diseases is highly unscientific and inadvisable.

[0004] For soil-borne pests and diseases, farmers typically apply pesticides by mixing them with irrigation water. They first prepare a stock solution of pesticide, then pour (dripping or flowing) it into the field's irrigation inlet, allowing the water flow to carry the pesticide into the field. While this method is simple, the stock solution and water do not mix evenly. This can lead to localized areas with excessively high pesticide concentrations (e.g., a pesticide-to-water ratio greater than 1:20), resulting in pesticide residues on the chives even if pests are killed; or localized areas with excessively low concentrations (e.g., a pesticide-to-water ratio less than 1:2000), where the pesticide mixture, even when in contact with the chive roots, is too weak to kill pests or diseases, or even just water without pesticide in some areas. This incomplete mixing of pesticides and water during irrigation prevents the pesticides from working precisely and efficiently, and can even lead to localized areas with excessive pesticide residues or increased resistance from pests and diseases, resulting in repeated damage. Therefore, in order to solve the problem of precise pesticide application and improve the effectiveness of pesticides in controlling soil-dwelling pests, it is necessary to develop an irrigation device that can accurately dispense and evenly mix pesticide solutions to address the aforementioned issues. Summary of the Invention

[0005] The purpose of this invention is to provide an irrigation device for field applications that can accurately dilute pesticides, mix the pesticide solution evenly, ensure consistent pesticide concentration throughout the water flow, and improve the effectiveness of soil pest and disease control.

[0006] The technical solution of this invention is:

[0007] A device for uniformly mixing and irrigating pesticides in the field comprises a mixer A, a mixer B, and a two-way valve. The device is characterized in that: mixer B is located on one side of mixer A, and a two-way valve is installed at the inlet between mixer A and mixer B, with mixer A and mixer B connected to the inlet via the two-way valve; a drive motor is mounted on the other side of mixer A via a frame, and the drive motor is connected to mixer A, mixer B, and the two-way valve via a transmission shaft.

[0008] The mixer A and mixer B are respectively composed of a mixing tank, a stirring paddle, and a dosing mechanism. The stirring paddle is installed in the mixing tank, and the dosing mechanism is installed on the mixing tank above the stirring paddle via a frame. The drive shaft of the stirring paddle is connected to the transmission shaft via a bevel gear.

[0009] The mixing tank is provided with an outlet, and a gate is installed on the mixing tank inside the outlet via a limiting groove; a lifting motor is installed on the mixing tank above the gate via a support plate, and the lifting motor is connected to the gate via a screw and screw nut.

[0010] The dosing mechanism consists of a dosing tray, a hopper, and a guide groove. The hopper is mounted on the frame above the dosing tray, and a dispensing port is provided at the bottom of the hopper. The guide groove is movably mounted on the frame below the dispensing port via a pin. The dosing tray is keyed to the drive shaft.

[0011] The dosing tray is evenly distributed with temporary storage grooves on its circumference, and the temporary storage grooves are intermittently slidably connected to the ends of the guide grooves.

[0012] The guide groove is equipped with a valve stem, which is intermittently sealed to the medicine outlet.

[0013] The two-way valve consists of a valve body, a valve core, and a valve cover. The valve core is installed on the valve body, and the valve cover is threaded onto the valve body at the rear end of the valve core. The valve cover is connected to the water inlet. The valve body at the front end of the valve core is connected to the mixing tank through a connecting pipe.

[0014] The valve core is semi-circular, and the valve core and valve cover are spaced apart. The valve core and valve body are slidably sealed together. The valve core is connected to the drive shaft through a worm gear.

[0015] The beneficial effects of this invention are as follows:

[0016] This device for uniformly mixing and applying pesticides in the field uses a mixing tank to collect water from the inlet. A dosing mechanism adds pesticide to the mixing tank, and a stirring paddle thoroughly mixes the water and pesticide. After uniform mixing, the pesticide is then applied to the field through the outlet, ensuring a consistent pesticide-to-water dilution ratio throughout the field. This guarantees effective killing of pests (and diseases) in the soil and at the plant roots, while minimizing pesticide residue. A two-way valve alternately introduces water into mixers A and B, allowing their mixing tanks to alternately store water and mix the pesticide. A gate controls the alternating water flow from the mixing tanks, ensuring continuous water flow into the field and improving irrigation efficiency. This device solves the problems of pesticides failing to reach plant roots or being unevenly diluted in existing application methods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the mixing device of the present invention;

[0019] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the dosing mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the dosing tray of the present invention;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the two-way valve of the present invention;

[0023] Figure 7 This is a schematic diagram of the longitudinal section of the two-way valve of the present invention;

[0024] Figure 8 This is a schematic diagram of the waterway structure of the present invention.

[0025] In the diagram: 1. Mixer A, 2. Mixer B, 3. Two-way valve, 4. Inlet, 5. Drive motor, 6. Drive shaft, 7. Waterway, 8. Inlet constant flow valve, 9. Outlet constant flow valve, 10. Water wheel, 11. Medicine tank, 12. Baffle, 13. Scale, 14. Medicine outlet, 15. Guide plate, 101. Mixing tank, 102. Agitator, 103. Outlet, 104. Limiting chute, 1 05. Gate, 106. Lifting motor, 107. Lead screw, 108. Lead screw nut, 109. Dosing tray, 110. Dosing hopper, 111. Guide groove, 112. Dosing outlet, 113. Pin, 114. Temporary storage tank, 115. Valve stem, 116. Sealing buffer pad, 301. Valve body, 302. Valve core, 303. Valve cover, 304. Worm gear, 305. Worm, 306. Connecting pipe. Detailed Implementation

[0026] Example 1

[0027] This device for uniformly mixing and applying pesticides in the field consists of a mixer A1, a mixer B2, and a two-way valve 3. Mixer B2 is located on one side of mixer A1, and the two-way valve 3 is installed at the inlet 4 between mixers A1 and B2. Mixers A1 and B2 are connected to the inlet 4 via the two-way valve 3. The function of mixers A1 and B2 is to uniformly mix and dilute the pesticide and water, ensuring the pesticide-to-water dilution ratio is within a reasonable range (1:20~1:2000). Applying pesticide and water to the field through mixers A1 and B2 allows the pesticide to be evenly distributed, thus ensuring the pesticide is effective against pests in the soil and at the plant roots, while minimizing residue formation. The two-way valve 3... The device controls the flow direction of water from inlet 4. Water is alternately introduced into mixer B2 and mixer A1 via check valve 3, so that the water used for irrigation is alternately mixed with pesticides in mixer A1 and mixer B2 and then alternately discharged. This alternating discharge from mixer A1 and mixer B2 allows water to be continuously supplied to the field for irrigation. On the other side of mixer A1, a drive motor 5 is mounted on the frame. The drive motor 5 is connected to mixer A1, mixer B2 and check valve 3 via transmission shaft 6. The function of drive motor 5 is to drive mixer A1, mixer B2 and check valve 3 through drive motor 5 and transmission shaft 6, so that mixer A1 and mixer B2 can mix water and pesticides evenly, and that check valve 3 can alternately control water to be introduced into mixer A1 or mixer B2 from inlet 4 during operation.

[0028] Mixer A1 and mixer B2 are respectively composed of a mixing tank 101, a stirring paddle 102, and a dosing mechanism. The mixing tank 101 contains the stirring paddle 102, whose drive shaft is connected to the transmission shaft 6 via a bevel gear. The mixing tank 101 serves as a container for storing water, allowing water and pesticides to mix within it. After the water and pesticides are evenly mixed, the mixture is used for irrigation in the field. The stirring paddle 102 mixes the water and pesticides in the mixing tank 101 during the mixing process, ensuring even dilution and uniformity of the pesticides and water, thus achieving a higher pesticide dilution ratio before they enter the field. The system is consistent with the standard, preventing situations where the local pesticide dilution ratio is too high or too low. An outlet 103 is provided on the mixing tank 101. A gate 105 is installed on the mixing tank 101 inside the outlet 103 via a limiting slide 104. The gate 105 allows water to be stored in the mixing tank 101 when the outlet 103 is closed, and releases water when the gate 105 is open, thus irrigating the field. In other words, the gate 105 controls the opening and closing of the outlet 103, thereby controlling the water storage and discharge of the mixing tank 101. A lifting motor 1 is installed on the mixing tank 101 above the gate 105 via a support plate. 06. A lead screw 107 is installed on the output shaft of the lifting motor 106, and a lead screw nut 108 is installed on the gate 105. The lead screw 107 and the lead screw nut 108 are threadedly connected. That is, the lifting motor 106 is connected to the gate 105 through the lead screw 107 and the lead screw nut 108. The function of the lifting motor 106 is to drive the lead screw 107 to rotate during the rotation of the lifting motor 106, thereby driving the gate 105 to rise and fall under the interaction of the lead screw 107 and the lead screw nut 108. Thus, the opening and closing of the outlet 103 is controlled during the rising and falling of the gate 105. Optionally, a lifting cylinder is installed on the mixing tank 101 above the gate 105 through a support plate. The piston rod end of the lifting cylinder... The gate 105 is connected to the gate valve 105, which is raised and lowered by the lifting cylinder to control the opening and closing of the outlet 103. A dosing mechanism is installed on the mixing tank 101 above the agitator 102 via a frame to add pesticides to the mixing tank 101, so that the pesticides can be mixed and diluted evenly with the water in the mixing tank 101 after the pesticides are added to the mixing tank 101. The dosing mechanism consists of a dosing plate 109, a pesticide hopper 110 and a guide trough 111. The pesticide hopper 110 is installed on the frame above the dosing plate 109 to store pesticides for later use. The dosing plate 109 is keyed to the drive shaft 6, and temporary storage slots 114 are evenly distributed on the circumference of the dosing plate 109.The bottom of the pesticide hopper 110 has a pesticide outlet 112. A guide groove 111 is movably mounted on the frame below the outlet 112 via a pin 113. The guide groove 111 is intermittently slidably connected to the end of a temporary storage tank 114. A valve stem 115 is installed on the guide groove 111, and the valve stem 115 is intermittently sealed to the outlet 112. The function of the guide groove 111 is to guide the pesticide as it flows out of the outlet 112, directing the pesticide solution from the outlet 112 into the temporary storage tank 114 for temporary storage. Simultaneously, as the dosing disc 109 rotates, the end of the guide trough 111 moves from the temporary storage groove 114 to the circumferential surface of the dosing disc 109. During this process, the dosing disc 109 drives the guide trough 111 to rotate around the pin 113. This rotation of the guide trough 111 then drives the valve stem 115 to rotate. When the end of the guide trough 111 reaches the circumferential surface of the dosing disc 109, the valve stem 115 closes the outlet 112, allowing the hopper 110 to intermittently dispense medication through the outlet 112 and the valve stem 115. The function of the temporary storage groove 114 is... As the dosing disc 109 rotates, the temporary storage tank 114 rotates to the guide tank 111 (the temporary storage tank 114 rotates to the top of the dosing disc 109), temporarily storing the medicine in the temporary storage tank 114. As the dosing disc 109 continues to rotate, the temporary storage tank 114, containing the medicine, rotates from the top of the dosing disc 109 to the bottom of the dosing disc 109, gradually tilting, and the temporarily stored medicine in the temporary storage tank 114 is poured into the mixing tank 101; the temporary storage tank 114 on the dosing disc 109 of the mixer A1 and the dosing disc of the mixer B2 The temporary storage tank 114 on 109 is staggered so that pesticides can be added alternately to the mixing tanks 101 of mixer A1 and mixer B2, thus alternating pesticide preparation. Preferably, a sealing buffer pad 116 is provided on the valve stem 115 or the outlet 112. This sealing buffer pad 116 strengthens the seal between the valve stem 115 and the outlet 112 when the valve stem 115 seals the outlet 112, and also cushions the valve stem 115 during the sealing process, preventing damage to the valve stem 115 or the outlet 112.

[0029] The two-way valve 3 consists of a valve body 301, a valve core 302, and a valve cover 303. The valve core 302 is mounted on the valve body 301, and the valve cover 303 is threaded onto the rear end of the valve body 301, communicating with the inlet 4. The front end of the valve body 301 of the valve core 302 is connected to the mixing tank 101 via a connecting pipe 306. The valve core 302 is semi-circular, and is spaced apart from the valve cover 303, with a sliding seal connection between the valve core 302 and the valve body 301. The valve core 302 is connected to the drive shaft 6 via a worm gear. The semi-circular shape of the valve core 302 is intended to allow for smooth flow of water through the valve core 302. 2. It can prevent water from flowing through the valve body 301 where the valve core 302 is sealed inside the valve body 301, and allow water to flow through the valve body 301 where the valve core 302 is not sealed. Then, when the transmission shaft 6 drives the valve core 302 to rotate inside the valve body 301 through the worm gear 304 and the worm 305, the valve core 302 can alternately seal the two outlets of the corresponding connecting pipe 306 on the valve body 301. Thus, during the rotation of the valve core 302, the connecting pipes 306 of the mixing pool 101 connected to the mixer A1 and the mixer B2 are alternately filled with water, thereby allowing the mixing pool 101 of the mixer A1 and the mixer B2 to alternately store water.

[0030] The device for uniformly mixing and irrigating pesticides in the field is also equipped with a programmable logic controller (PLC: Siemens S-200). The PLC is connected to the lifting motor 106 and the drive motor 5 to control their operation, specifically:

[0031] When drive motor 5 starts, its rotation drives the dosing disc 109 and agitator 102 of mixer A1, as well as the worm gear 304 and the dosing disc 109 and agitator 102 of mixer B2, via transmission shaft 6. During rotation, worm gear 304 drives valve core 302 of check valve 3 via worm 305. When valve core 302 rotates to the side of mixer B2, inlet 4 connects to mixing tank 101 of mixer A1 via check valve 3 and connecting pipe 306. Water enters mixing tank 101 of mixer A1 through inlet 4, causing mixing tank 101 of mixer A1 to fill with water. During the rotation of the dosing disc 109 of the mixer A1 driven by the drive shaft 6, the temporary storage groove 114 of the dosing disc 109 of the mixer A1 gradually moves towards the guide groove 111 of the mixer A1, causing the end of the guide groove 111 of the mixer A1 to gradually enter the temporary storage groove 114 from the circumference of the dosing disc 109 of the mixer A1. After the guide groove 111 of the mixer A1 enters the temporary storage groove 114, under the action of its own gravity, the guide groove 111 of the mixer A1 rotates around the pin 113, causing the valve stem 115 on the guide groove 111 of the mixer A1 to open the outlet 112 on the medicine hopper 110 of the mixer A1; after the outlet 112 of the mixer A1 is opened, the mixer A1 The pesticide in the pesticide hopper 110 flows sequentially through the outlet 112 and the guide channel 111 into the temporary storage tank 114 on the dosing plate 109 of the mixer A1. As the dosing plate 109 of the mixer A1 continues to rotate, the end of the guide channel 111 of the mixer A1 gradually moves from the temporary storage tank 114 towards the circumference of the dosing plate 109, causing the guide channel 111 to gradually close the outlet 112 of the pesticide hopper 110 through the valve stem 115. As the dosing plate 109 of the mixer A1 continues to rotate, it simultaneously drives the temporary storage tank 114 containing the pesticide to move, causing the temporary storage tank 114 to gradually tilt, pouring the pesticide in the temporary storage tank 114 into the mixing tank of the mixer A1. In the mixing tank 101 of the pesticide mixer A1, the drive shaft 6 drives the stirring paddle 102 to rotate through the bevel gear, so that the pesticide and water in the mixing tank 101 of the pesticide mixer A1 are mixed and diluted evenly. After the pesticide and water in the pesticide mixer A1 are mixed and diluted evenly, that is, after the mixing tank 101 of the pesticide mixer A1 has been filled with water for a period of time, the lifting motor 106 of the pesticide mixer A1 is started. The lifting motor 106 drives the gate 105 to rise through the lead screw 107 and lead screw nut 108, so that the outlet 103 of the mixing tank 101 of the pesticide mixer A1 is opened, and the pesticide and water that are diluted evenly in the mixing tank 101 of the pesticide mixer A1 are discharged into the field, thereby irrigating the field.After the pesticide and water are evenly diluted in the mixing tank 101 of mixer A1 and discharged, i.e., after the lifting motor 106 has been running for a period of time, the lifting motor 106 restarts and drives the gate 105 to reset, closing the outlet 103 of the mixing tank 101 of mixer A1 again, allowing the mixing tank 101 of mixer A1 to refill with water; when the worm gear 304 rotates, it drives the valve core 302 to rotate to the side of mixer A1, and the inlet 4 is connected to the mixing tank 101 of mixer B2 through the two-way valve 3 and the connecting pipe 306, allowing water to enter the mixing tank 101 of mixer B2 through the two-way valve 3 and the connecting pipe 306, thus filling the mixing tank 101 of mixer B2 with water; mixing pesticides... When the mixing tank 101 of mixer B2 is filled with water, during the rotation of the dosing plate 109 of mixer B2 driven by the drive shaft 6, the temporary storage groove 114 on the dosing plate 109 of mixer A1 and the temporary storage groove 114 on the dosing plate 109 of mixer B2 are misaligned. This causes the guide groove 111 of mixer A1 to close the outlet 112 of the hopper 110 through the valve stem 115. Under the action of the dosing plate 109 of mixer B2, the guide groove 111 of mixer B2 rotates around the pin 113, causing the valve stem 115 on the guide groove 111 of mixer B2 to open the outlet 112 of the hopper 110 of mixer B2. After the outlet 112 of mixer B2 is opened, the medicine in mixer B2... The pesticide in hopper 110 flows sequentially through outlet 112 and guide channel 111 into temporary storage tank 114 on dosing plate 109 of mixer B2. As dosing plate 109 of mixer B2 continues to rotate, the end of guide channel 111 gradually moves from temporary storage tank 114 to the circumference of dosing plate 109, causing guide channel 111 to gradually close outlet 112 of hopper 110 via valve stem 115. Simultaneously, as dosing plate 109 of mixer B2 continues to rotate, it also drives temporary storage tank 114, which contains pesticide, to move, causing it to gradually tilt and pour the pesticide into the mixing water of mixer B2. In the mixing tank 101 of the pesticide mixer B2, the drive shaft 6 drives the stirring paddle 102 to rotate through the bevel gear, so that the pesticide and water in the mixing tank 101 of the pesticide mixer B2 are mixed and diluted evenly. After the pesticide and water in the pesticide mixer B2 are mixed and diluted evenly, that is, after the mixing tank 101 of the pesticide mixer B2 has been filled with water for a period of time, the lifting motor 106 of the pesticide mixer B2 is started. The lifting motor 106 drives the gate 105 to rise through the lead screw 107 and lead screw nut 108, so that the outlet 103 of the mixing tank 101 of the pesticide mixer B2 is opened, and the pesticide and water that are diluted evenly in the mixing tank 101 of the pesticide mixer B2 are discharged into the field, thereby irrigating the field.After the pesticide and water are evenly diluted in the mixing tank 101 of mixer B2 are discharged, i.e., after the lifting motor 106 has been running for a period of time, the lifting motor 106 restarts and drives the gate 105 to reset, closing the outlet 103 of the mixing tank 101 of mixer B2 again, allowing the mixing tank 101 of mixer B2 to refill with water. In this way, mixers A1 and B2 alternate in a cycle, continuously irrigating the field; the evenly diluted pesticide in the water kills insects in the soil and around the plant roots.

[0032] This device for uniformly mixing and applying pesticides in the field uses a mixing tank 101 to collect water flowing in from the inlet 4. A pesticide dosing mechanism adds pesticide to the mixing tank 101, and a stirring paddle 102 mixes the water and pesticide evenly. After thorough mixing, the pesticide is then applied to the field through the outlet 103, ensuring uniform pesticide dilution throughout the field. This consistent pesticide-to-water dilution ratio ensures effective killing of pests in the soil and around plant roots while minimizing pesticide residue. A two-way valve 3 alternately introduces water into mixers A1 and B2, allowing the mixing tanks 101 of mixers A1 and B2 to alternately store water and mix pesticides. A gate 105 controls the alternating discharge of water from the mixing tanks 101, ensuring continuous water flow into the field and improving irrigation efficiency. This solves the problems of pesticides failing to reach plant roots or being unevenly diluted in existing application methods.

[0033] Example 2

[0034] This device for uniformly mixing and applying pesticides in the field consists of a waterway 7, an inlet constant flow valve 8, an outlet constant flow valve 9, a waterwheel 10, a pesticide tank 11, and a baffle 12. The inlet constant flow valve 8 controls the inflow rate of waterway 7, ensuring a constant flow. The outlet constant flow valve 9 controls the outflow rate, also ensuring a constant flow. This, combined with the inlet constant flow valve 8, controls the water volume and flow rate within waterway 7, maintaining a constant water volume and flow rate. This ensures consistent pesticide concentration during pesticide dilution while maintaining a consistent flow rate. After the pesticide enters the field, the amount of pesticide is evenly distributed throughout the field during flood irrigation, thus ensuring that the pesticide kills pests and diseases without leaving pesticide residues. Multiple waterwheels 10 are installed within the waterway 7. As the water flows through the waterway 7, the waterwheels 10 rotate, creating turbulence rather than laminar flow. The agitation by the waterwheels 10 also facilitates the mixing of water and pesticide. A guide plate 15 is installed at the front end of the waterwheel 10 within the waterway 7. The guide plate 15 guides the water flow within the waterway 7, ensuring that the water first impacts the lower part of the waterwheel 10, thereby maintaining the direction of rotation of the waterwheel 10. Simultaneously, the water flow in the waterway 7 is further agitated by the guide plate 15; a medicine tank 11 is installed above the waterway 7 to store pesticides, and pesticides are gradually added to the waterway 7 through the medicine tank 11; a scale 13 is installed on the medicine tank 11 to control the amount of pesticide stored in the medicine tank 11; a medicine outlet 14 is installed at the bottom of the medicine tank 11 to allow pesticides to flow out from the medicine outlet 14 and into the waterway 7, thereby adding pesticides into the waterway 7; a baffle 12 is installed at the end of the blade of the waterwheel 10 below the medicine tank 11, and the baffle 12 is intermittently slidably sealed to the medicine outlet 14. The function of the baffle 12 is that during the rotation of the waterwheel 10, the waterwheel 10 drives the baffle 12 to rotate around the waterwheel shaft. The rotation direction of the flow meter 10 remains consistent under the action of the guide plate 15, and the flow rate remains consistent under the action of the inlet constant flow valve 8 and the outlet constant flow valve 9. This causes the baffle 12 to intermittently seal the outlet 14 at the bottom of the medicine tank 11, and the sealing interval of the outlet 14 is consistent, so that the medicine tank 11 can intermittently add medicine into the waterway 7. This controls the amount of medicine added into the waterway 7, so that when the water and medicine are mixed in the waterway 7, the ratio of medicine to water is within a reasonable range (1:20-1:2000). Furthermore, the water wheel 10 with the baffle 12 is driven by a motor to control the rotation speed of the baffle 12 during the rotation of the water wheel 10 controlled by the motor, thereby controlling the opening interval of the outlet 14, and thus further precisely controlling the amount of medicine added.

[0035] This device for uniformly mixing and applying pesticides in the field can control the water flow through the inlet constant flow valve 8 and the outlet constant flow valve 9, keeping the water flow constant. The amount of pesticide added can be controlled by the water wheel 10 and the baffle 12, ensuring uniform dosage. This allows the water and pesticide to be mixed evenly during the process. The uniformly mixed pesticide solution is then flooded into the field, ensuring consistent pesticide dosage throughout the field. This ensures that the pesticide can kill pests and diseases without causing pesticide residues. This solves the problem of pesticides not reaching the plant roots or being unevenly diluted in existing application methods.

Claims

1. A device for uniformly mixing and irrigating pesticides in the field, comprising a mixer A, a mixer B, and a two-way valve, characterized in that: Mixer A is equipped with mixer B on one side. A two-way valve is installed on the inlet between mixer A and mixer B. Mixer A and mixer B are connected to the inlet through the two-way valve respectively. A drive motor is installed on the other side of mixer A through the frame. The drive motor is connected to mixer A, mixer B and the two-way valve respectively through the transmission shaft. The mixer A and mixer B are respectively composed of a mixing tank, a stirring paddle, and a dosing mechanism. The stirring paddle is installed in the mixing tank, and the dosing mechanism is installed on the mixing tank above the stirring paddle via a frame. The drive shaft of the stirring paddle is connected to the transmission shaft via a bevel gear. The dosing mechanism consists of a dosing tray, a hopper, and a guide groove. The hopper is mounted on the frame above the dosing tray, and a dispensing port is provided at the bottom of the hopper. The guide groove is movably mounted on the frame below the dispensing port via a pin. The dosing tray is keyed to the drive shaft. The dosing tray is evenly distributed with temporary storage slots on its circumference, and the temporary storage slots are intermittently slidably connected to the ends of the guide slots. A valve stem is provided on the guide groove, and the valve stem is intermittently sealed to the medicine outlet; The drive shaft drives the dosing disc of the mixer to rotate, causing the guide trough end of the mixer to gradually enter the temporary storage tank from the circumference of the dosing disc. After the guide trough enters the temporary storage tank, under the action of its own gravity, the valve rod on the guide trough opens the outlet on the pesticide hopper, and the pesticide flows into the temporary storage tank. As the dosing disc continues to rotate, the guide trough gradually closes the outlet of the pesticide hopper through the valve rod. As the dosing disc continues to rotate, the temporary storage tank containing the pesticide gradually tilts, pouring the pesticide in the temporary storage tank into the mixing pool.

2. The device for uniformly mixing and irrigating pesticides in the field according to claim 1, characterized in that: The mixing tank is provided with an outlet, and a gate is installed on the mixing tank inside the outlet via a limiting groove; a lifting motor is installed on the mixing tank above the gate via a support plate, and the lifting motor is connected to the gate via a screw and screw nut.

3. The device for uniformly mixing and irrigating pesticides in the field according to claim 1, characterized in that: The two-way valve consists of a valve body, a valve core, and a valve cover. The valve core is installed on the valve body, and the valve cover is threaded onto the valve body at the rear end of the valve core. The valve cover is connected to the water inlet. The valve body at the front end of the valve core is connected to the mixing tank through a connecting pipe.

4. The device for uniformly mixing and irrigating pesticides in the field according to claim 3, characterized in that: The valve core is semi-circular, and the valve core and valve cover are spaced apart. The valve core and valve body are slidably sealed together. The valve core is connected to the drive shaft through a worm gear.

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